Learn how to quickly set up and configure your MemoRail transmitter for pH, ORP, conductivity, and oxygen sensors.

Overview

In this video, we’re going to walk you through basic setup and configuration of the 4…20 mA version of the compact MemoRail transmitter from Knick. This 4-wire device can be powered by either 24 volts DC directly at the terminals, or by a DIN rail BUS connector. 90 to 230 volts AC can also power the device, wired directly into the terminals. This transmitter is a single channel, multi-parameter device for connection of a Memosens pH, ORP, conductivity or oxygen sensor.

Setup and Configuration

Terminals 4.1 to 6.1 at the bottom of the device carry out the connection of the Memosens cable. Two 4…20 mA outputs are also provided in either an active or passive format. Make this selection upon ordering your transmitter. To span the outputs, we’ll follow the diagram printed on the side of the housing and set the DIP switches accordingly. It’s important to note that custom measurement spans are also available. You should request this upon ordering your transmitter.

We’ll configure this transmitter for a pH measurement from 0 to 7 pH, by ensuring DIP switches 1 & 2 are off and DIP switch 5 is flipped on. We’ll also be spanning our temperature measurement for the 2nd analog output from -50 to 200° C. We’ll do this by switching DIP switch 6 on and setting our failure mode to 22 mA by flipping DIP switch 7 on.

Calibration

You must calibrate your sensors offline when using the 4…20mA version of MemoRail. Check out the video link on how to calibrate your Memosens pH sensor using our Portavo 907 Multi portable meter.

We’re now ready to apply power, connect our pre-calibrated Memosens pH sensor and go online with our measurement! Thank you for watching and be sure to check out our next video on troubleshooting your Knick MemoRail transmitter.

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